Von Duprin 050400 Top Latch Kit for Surface Vertical Exit Devices, Less Cover
The Von Duprin 050400 is a replacement top latch kit for surface vertical rod exit devices in the 22, 33, and 98 Series. It is supplied less cover and is intended for restoring or maintaining proper top latch function on surface vertical rod hardware in commercial applications.
Key Features
- Series Compatibility: Fits Von Duprin 22, 33, and 98 Series surface vertical exit devices.
- Grade 1 Commercial Rating: Meets Grade 1 standards for durability and performance in high-traffic commercial environments.
- Less Cover Configuration: Supplied without cover. Pair with a separately sourced cover component or integrate with an existing assembly as required.
- Direct Replacement: Purpose-built replacement for the top latch assembly on surface vertical rod exit devices, minimizing downtime during service.
Technical Specifications
- Part Number: 050400
- Series: 22/33/98 Series
- Grade: Grade 1
- Configuration: Less Cover
- Application: Commercial
- Parts Type: Replacement Part
Manufacturer Resources
Product Specs
- Product Group:
- Exit Devices and Trim
- Series:
- 22/33/98 Series
- Grade:
- Grade 1
- Product Subgroup:
- Parts and Accessories
- Subcategory:
- Parts and Accessories
- Product Type:
- Exit Devices Parts
- Commercial/Residential:
- Commercial
- Parts and Accessories Type:
- Replacement Parts
- Product Attribute:
- Parts and Accessories
- Fire Rating:
- No
- Product Category:
- Exit Devices and Trim
- Department:
- Door Hardware
Von Duprin 050400 – Frequently Asked Questions
1) Will the Von Duprin 050400 top latch kit fit my 98 Series surface vertical rod exit device?
Yes. The 050400 top latch kit is built for Von Duprin surface vertical rod exit devices in the 22, 33, and 98 Series. If your device is a surface vertical rod unit from any of those three families, this is the correct top latch assembly. It will not serve a rim device or a concealed vertical rod device, since those latch differently at the head.
2) Does the Von Duprin 050400 come with the top latch cover?
No cover is included. The 050400 ships less cover, so you either reuse the cover already on the device you are servicing or source the cover separately. On a straight top latch replacement where the existing cover is intact, that is usually all you need, but plan for it before the truck rolls.
3) Can I use the Von Duprin 050400 top latch on a fire rated door opening?
No. The 050400 top latch kit carries no fire rating, so it should not be used to service a fire rated exit device assembly. Fire rated openings need components that are listed as part of that rated assembly, and swapping in an unrated part compromises the listing on the whole door.
4) My exit device latches at the top but the bottom rod is fine. Do I need a whole new device or just the top latch?
Just the top latch. The 050400 is the replacement top latch assembly for Von Duprin 22, 33, and 98 Series surface vertical rod devices, so a top latch that will not hold, drags, or fails to project can be corrected without pulling and rebuilding the whole device. That keeps the opening in service and avoids re-prepping the door or frame.
5) What is the equivalent top latch replacement part for an Accentra exit device instead of the Von Duprin 050400?
The Von Duprin 050400 is a top latch kit built for Von Duprin 22, 33, and 98 Series surface vertical rod exit devices, and it is not a cross-brand part. On Accentra hardware, the corresponding service part is the Accentra 7110/7120 exit device top latch replacement component (60-7010-0049-999), which serves the 7110 and 7120 devices. Both are non-fire-rated components, so on a labeled opening neither one is the part to reach for. Match the top latch to the device family already hung on the door: a 98 Series device takes the 050400, a 7110 or 7120 device takes the Accentra part.
6) Can a Falcon 610061 top rod be used in place of a Von Duprin 050400 top latch kit?
No - they are parts for two different vertical rod systems. The Von Duprin 050400 is a top latch kit for surface vertical rod exit devices in the 22, 33, and 98 Series, supplied less cover. The Falcon 610061 is a 24 Series Monarch concealed vertical top rod for F-25-C and F-25-CWDC exit devices - a rod that runs inside the door, not a surface-mounted latch assembly. Surface rod hardware and concealed rod hardware do not share top latch or rod components, so identify whether the rods on the door are exposed on the face or hidden in the stile before ordering either one.
7) Is the Von Duprin 050400 top latch kit rated for high traffic commercial doors?
It is a Grade 1 commercial part, which is the heaviest ANSI/BHMA duty class and the one specified for high-use openings like school corridors, stairwells, and building entries. It is not a light-duty or residential component.
8) Do I need a mullion if I am using a surface vertical rod exit device on a pair of doors?
No. A surface vertical rod device latches into the head and the threshold rather than into a strike at the door edge, so it secures a pair of doors without a center mullion. That is why the top latch matters so much on these openings: if it is worn or misadjusted, the door only holds at the bottom. If you are running rim devices on a pair instead, that is where you need a removable mullion, such as the Falcon 4023 steel mullion.
9) Can I use the Von Duprin 050400 to replace the top rod on a concealed vertical rod device?
No. The 050400 serves surface vertical rod hardware, where the rods run on the face of the door. A concealed vertical rod device houses its rods inside the door and uses different components entirely. For a concealed application on Falcon 24 Series Monarch hardware, for instance, the top rod is a dedicated part such as the Falcon 610061 for F-25-C and F-25-CWDC devices.
10) I manage a building with a mix of Von Duprin 22, 33 and 98 exit devices. Do I need a different top latch kit for each one?
One part covers all three. The 050400 top latch kit works across Von Duprin 22, 33, and 98 Series surface vertical rod devices, so a maintenance shop can stock a single top latch and cover every surface vertical opening in the portfolio rather than carrying three. Note it comes less cover, so keep the existing covers when you service a device.
11) What is the difference between the Accentra 7110/7120 and 7110F top latch components?
They are two separate service parts for two different device builds. The Accentra 60-7010-0049-999 is the top latch replacement component for the 7110 and 7120 exit devices, while the 60-7010-0050-999 is the top latch replacement component for the 7110F. Both carry a fire rating of No as components. Read the device label on the door before ordering - the F suffix on the device determines which of the two Accentra parts fits, in the same way the 22, 33, or 98 Series marking determines that a Von Duprin device takes the 050400 top latch kit.
12) Instead of repairing the top latch on a pair of doors, what hardware lets you use rim devices on the same opening?
On a double-door opening, a removable mullion changes the approach: the Falcon 4023 steel mullion is made for double door exit device applications, letting each leaf carry a rim device rather than a vertical rod device with top and bottom latching. That is a hardware change to the opening, not a service part. If the existing surface vertical rod devices are staying, the repair path is the component route - a Von Duprin 050400 top latch kit restores top latch function on 22, 33, and 98 Series surface vertical rod devices, supplied less cover so an existing cover or a separately sourced one completes the assembly.
13) My exit device will not latch at the top of the frame - is the fix a top latch kit or a mullion stabilizer?
They address different faults. A Von Duprin 050400 top latch kit replaces the top latch assembly itself on 22, 33, and 98 Series surface vertical rod exit devices, which is the part in question when the latch is worn, damaged, or no longer engaging the top strike. Falcon 525 aluminum mullion stabilizers are exit device accessories that steady the mullion on a double-door opening, addressing movement in the mullion rather than anything inside the device. Check whether the latch mechanism is failing or the mullion is deflecting before ordering.
14) Does a deadlatch replacement part work as a substitute for an exit device top latch?
No. The Falcon 23981160 is a T Series 2-3/8 inch square corner deadlatch replacement part, which serves a cylindrical or mortise style latch in the edge of the door. The Von Duprin 050400 is a top latch kit for surface vertical rod exit devices in the 22, 33, and 98 Series, where the latching point is at the head of the frame and is driven by a vertical rod from the push bar. The two are not interchangeable in either direction - a top latch serves the vertical rod system, a deadlatch serves the lockset in the door edge.
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Does the Von Duprin 050400 come with a warranty?
Absolutely. The Von Duprin 050400 is backed by a manufacturer’s warranty.
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